Shook carriage for box making machines



Jufiy 19, 11932. H. PAXTON 1,867,951

SHOOK CARRIAGE FOR BOX MAKING MACHINES Filed Dec. 29, 1928 5 Sheets-Sheet 1 IN VENTOR.

MM 'ATTOR NE Y5.

July 19, 1932. H, PAXTQN 1,867,951

SHOOK CARRIAGE FOR BOX MAKING MACHINES Filed Dec. 29, 1928 3 Sheets-Sheet 2 gfi INVENTQR.

A TTOR NE YS.

July 19, W32. PAXTQN 1,8fi7,951

SHOOK CARRIAGE FOR BOX MAKING MACHINES Filed Dec. 29, 1928 3 Sheets-Sheet 3 INVENTOR; M W

A TTOR NE Y5.

Patented July 19, 1932 HALE PAXTON, OF SANGER, CALIFORNIA SHOCK CARRIAGE FOR BOX MAKING- MACHINES Application filed December 29, 1928. Serial No. 329,230.

My invention relates to a box making machine and more specifically to the timed mechanism which positions the box shook and holds it in box form while being nailed.

In making a box the order of assembling it is as follows: The ends are positioned a spaced distance apart on the nailing table and one side is nailed to the end boards;-the incompleted box is then turned so the bottom 1 of the box is uppermost and the bottom is then positioned and nailed thereon; the incompleted box is again turned so the open side is uppermost and the side shook is positioned therewith and nailed, thus completing an open top box. In each of these steps the incompleted box form is turned so that the portion being finished is uppermost.

Inasmuch as the depth of the boxes varies from the width and the nailing means cooperate to drive nails only when the face of the box to be nailed is on an approximately predetermined level, it is necessary to construct the nailing table with Varying and adjustable levelsadapted when the box is placed thereon to bring the top surface of the box to said nailing level whether said top surface comprises the side or the bottom of the box. A preferred form of nailing table hav ing such adjustable means is fully disclosed in Patent No. 1,789,495, issued to me January 20,1931.

On box nailing machines in which the driven nails are selectively spaced apart, and the number of nails driven at one time is limited to two, being one on each side of the box, it is necessary to slide the unfinished box on the nailing table to position it for driving nails therein.

When a face of the unfinished box is presented for nailing the boxis slid back on the nailing table to position it for driving the first nails therein, and the box is then drawn toward the operator and stopped at the selective positions Where it is desired to drive the nails. Rapidity in completing the box is one of the general objects in box making machines.

The specific object in this invention is the construction of a carriage adapted to slide the box on the nailing table, and automatic stops cooperating with the nailing tables to selectively stop the carriage at such locations as is desired in the pathof travel of the carriage. Other objects will hereinafter be disclosed. In the drawings accompanying this specification, Figure 1 is a fractional front View v of the device having portions broken away showing a nailing table and carriage thereon.

Figure 2 is a fractional side View of the 59 devlce.

Figures and 4 are top views of the'device showing box forms resting on nailing tables of different heights.

Figure 5 is a fractional view of an arm for automatically moving the box form shown in Fig. 2 and a form of latch used therewith.

The device has a frame 10 consisting of upright posts 11 and 11a, crossbeams 1 2 and 12a, and base members 15 and 15a. The base members are attached to the lower ends of posts 11 and 11a and are adapted to hold said posts in an upright position.

The base members are connected with a tie 16. On the top of cross beams 12 are block supports 13 and 13a for supporting the nailing table consisting of cross members 17 and 17a. Cross members 17 and 17a are on a common plane, on the top, and are spaced apart the approximate length of the box, so that in making a box, the box ends can be supported thereon. Cross members 17 and 17a are adapted as a slideway for a carriage assembly 18, carriage assembly 18 consists of two sliding shoes 19 and 19a spaced apart so they can ride on the topof cross members 17 and 17a, said shoes 19 and 19a being attached together by tie bar 20 adjacent to the front end of the shoe assembly, and by a crossbar 21 at the rear end of the shoes. Cross bar 21 has upright members 22 and 22a which are tied at the top by bar 23. A handle 24 is attached to tie bar 23 and is adapted for use in pulling the carriage forward;

Attached to uprights 12. and 11a are slideway assemblies 25 and 25a. Assembly 25a consists of arm 26a attached to upright 11a. Arm 26a supports one end of rod 27a. Rod 27a is positioned parallel with the tables 17 0 and is adapted as a slide guide as hereinafter explained. It is here noted that slideway assembly 25 attached to the frame opposite assembly 25a is of similar construction. Tie bar 23 has on each end thereof a concave member 28, and 28a, adapted to slide on rods 27 and 27a. The length of tie rod 23 is such that the members 28 and 28a will engage rods 27 and 27a, and carriage assembly 18 can he slid forward or back by pulling or pushing on the handle .24, with the shoes resting on cross members 17 and 17a, and the upper part of the carriage being supported and guided on rods 27 and 27a.

The form of adjustable table disclosed in Patent No. 1,789,495, referred to, consists of two cooperating units 38 and 38a. Each unit consists of two upright supports and a cross support. The upright supports of unit 38 are designated 40 and 41 and the cross .sup-

port 42. The upright supports of unit 38a consist of uprights 40a and 41a, and the cross support 42a. Cross supports 42 and 42a comprise the top of nailing table. The upright supports are pivoted near the lower ends thereof to cross beams 12 and 12a by pivots 35 and 35a.

These pivots adapt the units to swing radially. When they are swung to an upright position they are in operative ,relation as a nailing table, and adapted to cooperate with the nailing means. When it is desired to position the adjustable tables in inoperative relation with the nailing device, the units forming the table are swung away from each other. When adjusting it to operative position the units are swung towardeach other. The means for swinging the table units into and out of operative relation is as follows: Upright table support 40 has an extension 44 below the pivot 35. Arm 45-is attached to extension 44 atan angle thereto. A rod 46 is pivoted at one end to arm 45 and at the other to a pedal lever 49. At one end of pedal lever 49 is fulcrum 48. and the pedal 50 is at the other end. By depressing pedal 50 unit 38 of which upright 40 is a part. will be pulled to an inoperative position.

rod 51 by a stop pin 54, the other end of which bears against a spring seat 53 attached to the frame. When the pedal is released from catch 55, spring 52 functions to draw the foot pedal upward and to swing table 30 and 30a.

To simultaneous-. ly make the opposite unit 38a cooperate and units 38 and 38a toward each other and in operative relation.

Stop assemblies 60 and 60a are positioned on either side of the device and are adapt-ed to cooperate with the slide rods 27 and 27a. Stop assembly 60 consists of a rod 61 pivotally mounted at the ends. To the rod is attached stop member 30 which can be adjusted between the ends of the rod and attached to the rod so that it has a rocking movement therewith. When stop 30 rests on slide rod 27, it forms a stop for the carriage by engaging concave member 28. A depending arm 31 is also attached to rod 61, and a position, and as the table units 38 and 38a 7 v are then in inoperative position, stops 30 and 30a are positioned on rod 61 for engagement with the slides 28 and 28a, and carriage 18 is moved backward with the box ends upended thereon until the concave members 28 and 28a are stopped by stops The side is then nailed thereon, and the carriage is pulled forward to position the box for the nailing. When the side uppermost is nailed, the carriage is at the forward limit of travel, and the next step is to assemble the bottoms with the box. As the depth of the box is less than the width, the upper table units are positioned in operative re ation which makes stops 30 and 30a inoperative, and the unfinished box is positioned on this upper nailing table to have the bottom nailed thereon. Then the box is pushed backwards so that the open side engages with tie bar 23, being part of carriage 18, andthe carriage moves backward until it is stopped by its limit of travel. It is noted in Fig. l the stops 30 and 30a are shown in inoperative position and the concave members 28 and 28a are positioned un der said stops.

When said bottoms are being positioned, stops 29 and 29a can be adjusted as to length to function to hold the shook bottom boards flush with the side of the box. Thus each table has separate stops which are adapted to function only when the table connected with the stops is in operative position, such stops being adapted to stop the backward movement only of the carriage. For the purpose 'of driving the nails selectively the carriage should be moved forward, preferably by pulling handle 24, and stopping the 7 forward from the perpendicular.

carriage when a nail is being driven. However, in lieu of manual means for moving the carriage forward this can be accomplished automatically by the device more clearly illustrated in Figure 2, which is a side view of a device. Like parts in this figure have the same designating characters shown in Figure 1. A lever 70 is pivotally attached at its lower end to base a, and at the upper end it is pivotally connected with link 72 to the carriage 18, which can be accomplished by attaching it to upright 22a. By moving the lever on pivot 71, carriage 18 can be moved forth and back. The dotted form 70a shows a fractional lever 70 in a forward position. A motor 73 actuates a pulley 7 1 which transmits power through a gear 75 to an enlarged gear 76. Gear 76 actuates the nail driving means 32, one revolution of the wheel being required to complete the driving of a nail. Rod 77 has ratchet 78 at one end and is adapted to cooperate with a catch 79. The end of rod 77 opposite the ratchet is formed into a bearing 80 which rides on an eccentric bearing 81 mounted on shaft 82. Thus when wheel 76 rotates rod 77 will receive a back and forth movement. The eccentric is timed so that when the nail is being driven, rod 77 is moving in the direction whereby the ratchet slides over the catch. When the nail driving means has driven the nail, the

ratchet engages latch 79 and pulls the carriage a pnedetermined space forward, regulatedby the reach of the movement of rod 77, when the nail driving means can again function. This device is especially useful in machines where there are but two nail drivers functioning, and a plurality of nails are required to make the box. Thus when the bottom is being assembled, the box form and carriage are pushed back to the carriage stop which may be in operative relation with the carriage, the bottom shook is then positioned and the nails are driven. After each driving movement the box is moved a spaced distance to position the box for driving the next nails.

Lever 7 O is returned to the starting position as follows: Latch 79 is adapted to slide vertically on lever 70 so that by gravity it can drop into the depressions of the comb. On the latch is loosely hinged an auxiliar latch 91 adapted to engage a stop 92, which stop is attached to lever 70. At each end of the ratchet is lobe, 93 and 94. When the successive impulses have brought latch 79 to the lobe 94, latch 79 and auxiliary latch 91 are raised with itand auxiliary latch 91 drops behind the catch 92, thus holding the latch abovethe ratchet and in inoperative relation therewith. This is accomplished by gravity as lever 70 is in the position of the same lever shown as 70a, which is leaning When lever 70is returned to the position shown, to-wit: leaning backward from the perpendicular, and lobe 93 again raises latch 79 and auxiliary latch 91, in which position auxiliary latch 91 swings out ofenga ement with stop 92 by gravity power, an latch 79 then by gravity drops into operative re lation with ratchet 78.

In Figures 3 and 4 the box forms 96 are shown. In Figure3 the lower tables 17 and 17a are in operative position on Which box form 96 rests, so that the box end 97 can be assembled with the ends. In said figure, box form 96 is standing on its side.

In Figure 4 the swinging table 42-42a are positioned directly over table 1717a, thus placing the swinging table in operative position to hold the box form with the bottom 98 uppermost, and high enough so that the nailing device can function thereon.

Having described my invention, I claim:

1. In combination with a nailing machine having a nailing table adapted to be adjusted in operative position and in inoperative position, of a carriage adapted to be moved on a plane approximately parallel with the plane of said table when the nailing table is in operative position, stop means for said carriage, meansfor positioning said stop means for active relation with said carriage,

and means actuated by said nailing table adapted to place said stop means in inoperative relation with said carriage when said nailing table is in operative position as a nailing table.

2. In combination with a box nailing machine having nailing tables, one or more of said nailing tables being adapted to be adjusted to operative position and to inoperative position as a nailing table, of a carriage adapted to travel, on a plane parallel with the plane of said nailing table when the nailing table is in operative position, stop means adapted to limit the backward movement of said carriage, means for positioning the stop means in active relation to said carriage, and separate means actuated by each nailing table adapted to place said stop means in inoperative relation with said carriage when said actuating nailing table is in operative position as a nailing table.

3. In combination with a box making machine having a plurality of nailing tables, of a carriage adapted to travel back and forth on a plane parallel to the plane of said nail- 1 ards; a horizontally slidable work carriage supported betweenmiddle portions of said standards; nailing mechanism supported on upper portions of said standards adapted to drive nails downwardly into work travelling on said carriage; a lever pivotally mounted on a lower portion of said frame, the upper end of said lever being connected to said carriage, said lever being mounted to swing in a plane parallel with the direction in which said carriage is shiftable; means for actuating said nailing mechanism, said means including a shaft journalled between lower portions of said standards; an arm associated with said shaft so as to be given a reciprocation with each revolution of said shaft; ratchet and pawl means associating said arm with said lever and transmitting movement of said arm in one direction to said lever during each of a series of said reciprocations so as to intermittently shift said work carriageand cause a predetermined spacing of nails driven in said work by said nailing mechanism; means for automatically disengaging said ratchet and pawl means at the end of a given series of movements by said carriage so as to permit said carriage to be returned to its beginning position; and means for automatically restoring said ratchet and pawl means to operative condition when said carriage is so returned.

5. In a box making machine the combination of: nailing mechanism adapted to drive nails downwardly at regularly timed intervals into the work along opposite edges thereof; a work carriage for feeding said work beneath said nailing mechanism in a direction parallel with said edges to space a plurality of nailing operations on a single piece of work; nailing table means for supporting the work selectively at either of two levels to compensate for different dimensions of the work being disposed vertically; and two stop means for limiting the movement of said carriage in a given direction, one of said stop means being adapted to be used when the work is supported on one level and the other stop means when the work is supported on the other level.

6. In a box making machine the combina-.

tion of: nailing mechaniEn adapted to drive nails downwardly at regularly timed intervals into the work along opposite edges thereof; a work carriage for feeding said work beneath said nailing mechanism in a direction parallel with said edges to space a plurality of nailing operations on a single piece of work; nailing table means for supporting the work selectively at either of two levels to compensate for different dimensions of the work being disposed vertically; two stop means for limitin the movement of said carriage in a given irection, one of said stop means being adapted to be used when the work is supported on one level and the other stop means when the work 15 supported on the other level; and means for associating one of said stop means with said nailing table means so as to automatically render the proper stop means operative according to the level at which said nailing table means is set to support the work.

1 -7. In a box making machine the combination of: nailing mechanism adapted to drive nails downwardly at regularly timed inter vals into the work along opposite edges thereof; a work carriage for feeding said work beneath said nailing mechanism in a direction parallel with said edges to space a plurality of nailing operations on a single piece of work; a lower nailing table beneath said edge portions of the work; and an upper nailing table, portions of which are adapted to be moved inwardly over said lower nailing table, the work being adapted to be supported upon either of said nailing tables and fed thereover by said carriage while nails are driven into the work by said nailing mechanism.

8. A combination as in claim 7 in which two stop means are provided for limiting the rearward movement of said carriage, one of said stop means halting said carriage at the rear extremity of the path of its movement and is adapted to be used when the work is resting on the upper movable nailing table, theother stop means halting said carriage forwardly from its rearmost position and is adapted to be used when the work is resting on the lower nailing table.

9. A combination as in claim 7 in which two stop means are provided for limiting the rearward movement of" said carriage, one of said stop means halting said carriage at the rear extremity of the path of its movement and is adapted to be used when the work is resting on the upper movable nailing table, the other stop means halting said carriage forwardly from its rearmost position and is adapted to be used when the work is resting on the lower nailing table; and means for automatically operating said last mentioned stop means to stop said carriage when said upper nailing table is in inoperative position and allow said carriage to pass when said upper table is in operative posi-.

tion.

i 10. In a box makingmachine the combination of: nailing mechanism adapted to drive nails downwardly at regularly timed intervals into the work along opposite edges thereof; means for feeding the work horizontally relative to said nailing mechanism in a direction parallel to said edges to space a plurality of nailing operations on a single piece of work; means for supporting the work at either of two levels to compensate for different dimensions of the work being disposed vertically; and two stop means for limiting the movement of the work in a. given direction, one of saidstop means being adapted to be used when the work is supported on one level and the other stop means when the Work is supported on the other level.

11. In a box making machine the combination of: nailing mechanism adapted to drive nails downwardlyvat regularly timed intervals into the Work along opposite edges thereof; a Work carriage for feeding said Work beneath said nailing mechanism in a direction parallel with said edges to space a plurality of nailing. operations on a single piece of Work; a lower nailing table beneath said'edge portions of the work; and an upper nailing table adapted to be moved inwardly beneath said edge portions of the Work, the work being adapted to be supported upon either of said nailing tables and fed thereover by said carriage While nails are driven into the Work by said nailing mechanism.

HALE PAXTON. 

